Fort Lauderdale is about 2.9 times smaller than Saint Kitts and Nevis.

Saint Kitts and Nevis is approximately 261 sq km, while Fort Lauderdale (excluding the city's 9.9 sq km of water area) is approximately 90 sq km, making Fort Lauderdale 34.48% the size of Saint Kitts and Nevis.
Tip: This to-scale comparison of Saint Kitts and Nevis vs. Fort Lauderdale uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.